Bolt.



No. 800,612. PATEN'IBD SEPT. 26, 1905. s. W. FINOH.

BOLT.

APPLICATION FILED APR. 18, 1905.

Snuentoz.

' UNITED STATES PATENT ()FFICE.

BOLT.

Specification of Letters Patent.

Patented Sept. 26, 1905.

Application filed April 18, 1905. Serial No. 256,272.

To (all whom it may concern:

Be it known that I, STANLEY l/V. FINoH, a citizen of the United States,residing at ashington, in the District of Columbia, have inventedcertain new and useful Improvements in Bolts, of which the following isa specification.

My present invention pertains to improvements in bolts, the constructionand advantages of which will be hereinafter set forth, reference beinghad to the annexed drawings, wherein Figure 1 is a side elevation of thebolt, the plates and nut being shown in section; Fig. 2, a perspectiveview of the bolt and nut; Fig. 3, a similar view of the two parts of thebolt; Fig. 4, a face view of a plate with the bolt therein; Fig. 5, aview similar to Fig. 1, showing a slightly-modified form of bolt; 6, alike view illustrating the use of the device in conjunction with a nutof special form; Fig. 7, a side elevation of a still furthermodification of the bolt; Fig. 8, a top plan view of said bolt; Fig. 9,a side elevation of a further modification, and Fig. 10 a sectionalelevation of a slightly-modified form of bolt and nut.

The object of my invention is to construct a two-part bolt in suchmanner that it may readily be inserted into a tapered opening formed ina plate or the like through the smaller orifice or entrance thereto, thehead of the bolt when so entered having a fair bearing upon all thewalls of the opening (with the possible exception of the bottom) andentirely filling the space in cross-area for the entire depth of thebolt-head. bolt-head is of a length equal to the depth of the opening,as in practice it is designed it should be, the entire space or openingis filled. l/Vhen the nut is secured upon the stem of the bolt,separation of the parts is absolutely precluded and it becomesimpossible to remove the bolt from the opening. By having the headextend from wall to wall of the tapered opening and leaving no spacebetween the abutting parts there is no chance for the parts to bend;but, on the other hand, they serve to mutually sustain and brace eachother.

Referring first to the construction illustrated in Figs. 1 to 4:,inclusive, A and B denote the members of a composite plate to which itis desired to secure a bolt. Plate A is provided or formed with anopening for the reception of the bolt-head, two opposite walls of theopening being inclined toward In case the.

each other, while the other two are vertically disposed. The boltcomprises two parts, one portion having a major head-section G and astem D. Head C is formed with an inclined outer face E and with a curvedface or seat F. The other or looking section of the bolt likewise has ahead G, formed with a beveled or inclined outer face H and with a curvedinner face I, said face being complemental in form to the curved face Fof the other section. The stem J of the second I section, together withstem D, forms a complete threaded stem for the reception of the nut Kwhen the parts are assembled. As will be observed, the widest portion ofhead G in the construction shown in the figures referred to above is atits point of junction with its stem. This enables the locking portion Gof the bolt-head to be passed into the opening after the major headportion has been inserted and moved to one side thereof. By forming thehead portions with complemental curved faces section G may be readilyplaced in position, the outer inclined face making a fair and fullbearing against the correspondingly-inclined face or wall of theopening.

In Fig. 5 a slight modification in the form of the bolt-head. is shown.Instead of making the outer inclined faces of the bolt-head uponstraight lines I propose to curve the same, as shown at L in saidfigure. The line of division between the two parts of the bolt iscurved, as in the former construction, the locking portion of thebolt-head being of the same thickness throughoutthat is to say, the lineof division and the line of curvature of the outer face are parallel. Inthe use of this construction the recess into which the bolt-head isfitted must of course. be curved to conform to the curvature of theinclined faces of the head in order that it may completely fill theopening.

In Fig. 6 the bolt is shown as applied to a single thickness of metal M,which may be said to represent a portion of a horseshoe, in which casethe bolt will be fitted with a nut of special form, as N in Fig. 6 or Uin Fig. 10, which serves as a calk. As will be readily appreciated, thebolt with the calk-nut may be applied to a horseshoe without removingthe shoe from the hoof of the animal.

In Figs. 7 and 8 a further modification of the invention is shown. Inthis construction the completed bolt-head is elliptical in crosssectioninstead of polygonal or rectangular.

Ioc

um emu in Fig. 9 a still further modification of the portion of the head0 is provided with a stem P, the outer end of which is of the fulldiameter of the completed stem. Said portion 0 is cut away or providedwith a curved seat or recess adapted and designed to receive the stem Qof the locking portion 1% of the boltlicad. \Vith this construction itmay be simpler to start the nut upon the. bolt than in the forms inwhich the line of division extends to the end of the stem.

Another modification of the bolt is shown in Fig. 10, in which eachsection of the head instead of having an inclined face, which extendsfrom the stem to the base or outer end or edge of the head, is shown asprovidedwith a curved face S and a straight face T, the latter beingparallel, or substantially so, with the axis of the stem of the bolt.The opening into which the head is to be fitted must of course be shapedto correspond thereto. The line of division between the two members isformed upon a curve and, as in the construction shown in Fig. 5, thecurved faces of the wedging and locking member of the head are inparallelism. In Fig. 10 is also shown a modified style of nut U, whichmay be partially or entirely polygonal in form.

The advantages of a bolt of the character herein shown and described aremanifest. As just noted, it presents a simple and ready means of forminga detachable or removable calk for horseshoes. It also afiords a simplemeans for attaching a device to a plate which must be cut from the sideupon which the device is to be secured. Situations often arise in whichit is found to be impossible to here through a plate, either for thereason that one side is not accessible or it is not desirable to make anopening entirely through the plate, in which event a bolt of thischaracter may be readily used. It is of course a comparatively simpleoperation to form a hole which will receive a bolt-head such as isherein shown.

I am aware that two-part bolts, broadly considered, are not new; but Iam not aware that such a bolt has ever been constructed in which thehead will completely fill the opening (in cross-area, at least) intowhich it is inserted, the parts at all times remaining in close conofthe bolt, and the other member likewise having a stem and a head portionthe inner face of which is inclined away from the other member of thebolt.

2. A longitudinally-bisected bolt, the line of bisection of the headbeing formed upon a curve extending from the stem outwardly toward oneside of the head.

3. A bevel-headed longitudinally-bisected bolt, the line of bisection ofthe head being formed upon a curve extending from the stem outwardlytoward one side of the head.

4t. A longitudinally-bisected bolt, the line of bisection being inclinedtoward one side of the head of the bolt and terminating at a point belowthe end of the stem.

5. A bolt comprising two parts adapted to form a complete bolt, one ofsaid parts having a wedge-shaped head with a curved face, the secondportion having a head-section provid ed with a complemental curved face,which portion when placed in position acts as a key or wedge to lock thebolt as a whole in place.

6. A bolt having two longitudinal sections. one of which sections has asubstantially wedge-shaped head that comprises more than one-half of theentire head of the bolt.

7. A bolt having two longitudinal sections, one of which sections has asubstantially wedge-shaped head that comprises more than one-half of theentire head of the bolt, and the other of which sections has itscorresponding end so shaped that its inner surface is complemental tothe inner surface of the wedge-shaped head of the other sect-ion.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

STANLEY XV. FINOH.

lVitn esses:

CHAS. J. ALLIsoN, Tnjos. B. MORTON,

